I had one variable (just a float) which will be used in all thread, which is the best place (memory)

Accelerated Computing CUDA CUDA Programming and Performance
1

I had one variable (which is frequency, a float type) which will be used in all thread, which is the best place (memory) I should put?

2

Either as an argument to the kernel function, or into constant memory.

Christian

3

Thanks. I was thinking about. Which one is better you think, constant memory or as argument? I personally don’t want to put it into the the argument. Then I have to make this argument for all functions.

4

constant, no doubt.

5

Thanks.

6

no difference on sm_20, arguments are stored in constant memory :)